Leigh Delbridge is Emeritus Professor of Surgery at Sydney University. He is Australia's most experienced parathyroid and thyroid surgeon and was head of the University of Sydney, Endocrine Surgical Unit for over 20 years. He only performs parathyroid and thyroid surgery and has done well over 10,000 such operations. The first minimally invasive parathyroidectomy in Australia using endoscopic techniques was performed by Professor Delbridge and published by the British Journal of Surgery. He has been the President of the International Association of Endocrine Surgeons, founding committee member of Australia and New Zealand Endocrine Surgeons, Chairman of the Section of Endocrine Surgery Royal Australasian College of Surgeons, and committee member of the Asian Association of Endocrine Surgeons and the International Society of Surgery. He is the past Chairman of the Surgical Research Society of Australia and has published over 350 papers on parathyroid, thyroid and related topics.